Spring-hinge.



W. J. KEENE L G. W. SCHUSTER. SPRING HINGE. APPLIOATION FILED JUNE 7, 1909.

mygl o Patented sept` 27, 1910.

@l fb Y IM "UFJTTBB STATE@ PATENT FFTQB.

WILLIAM JAMES KEENE AND GEORGE W. SCI-IUSTER, OF CHICAGO, ILLINOIS, AS- SIGNORS TO CHICAGO SPRING BUTT COlVIPANY, OF CHICAGO, ILLINOIS, A COR- PORATION.

SPRING-HINGE.

arnesi.

Application filed June 7, 1909.

invented certain new and useful Improvements in SpringwHinges, of which we do declare the following to be a full, clear, and exact description, reference being had to the accompanying drawing, forming part of this specification.

The object of the present invention is to provide a very simple, strong and effective construction of spring hinge and the invention consists in the improvement hereinafter described, illustrated in the accompanying drawing and particularly defined in the claims at the end of this specification.

Figure l is a view -in elevation of a spring hinge embodying our invention. Fig. 2 is a view in central vertical section on line 2-2 of Fig. l. Fig. 3 is a view in cross section on the line 3 3 of Fig. l. Fig. lis a detail perspective view showing one leaf of the hinge with the spring -inclosing barrel formed integral therewith. Fig. 5 is a perspective view of the opposite leaf of the hinge.

A and B designate respectively the two leaves of the hinge, and A denotes the barrel that serves to inclose the coil spring C and parts immediately connected therewith. rlhe barrel A is formed integral with the hinge leaf A and by ceiling a portion of a suitable metal blank back upon itself into the tubular form, as clearly shown in the drawing. The inner edge a2 of that portion of the metal forming the barrel A is introverted and is interlocked with the metal body at the point of union of the barrel and the leaf. Preferably, the edge a2 is formed with a projecting lug a that is passed through a hole a formed in the leaf A where it merges into the barrel A. rThe head of the lug a is upset to more effectively prevent the withdrawal of the lug from the hole wherein it fits. Obviously, any desired number of these lugs and holes may be used to give greater strength to the spring barrel A. By this construction an exceedingly strong and yet simple barrel is provided for retaining the coil spring C and the parts connected therewith.

By forming the spring barrel A with its edge a2 introverted, z'. e., turned in the direc- Specicaton of Letters Patent.

Patented Sept. 2T, MMU.

Serial No. 500,717.

tion of the coiled barrel, the body of the barrel more completely conforms to the ontline of the spring and, hence, more effectively resists any tendency of the spring to spread the walls of the barrel.

In one end of the spring barrel A is placed a perforated plug D having a flange l that rests upon the adjacent end of the barrel A. And, as shown, the plug D is provided with a stud or offset d that engages the edge a2 of the barrel A and thus prevents the plug from turning. In the opposite end of the spring barrel A is placed a collar E, the fiange e of which is seated against the end of the spring barrel A and from this collar E projects a stud or offset c that engages the edge a2 of the spring barrel and holds the collar E against rotation. Through the collar E is passed a tension plug F that is free to rotate with respect to the collar E. The reduced portion Z2 of the plug D and the inner end of the plug F are formed with grooves or notches to receive the ends of the coil. spring C, in manner well understood by those familiar with this class of devices. The tension plug F has its outer e'nd formed with the expanded portion or flange f2 that is formed with a series of holes f3 into which a suitable instrument will be inserted in order to impart the desired tension to the coil spring C, a retaining pin G being inserted in one of the holes f3 in order to maintain the spring under tension. rlhe hinge leaf B is provided with the usual ears b through the perforations o of which is passed the retaining pintle H. @ne end of this pintle has xed thereto a head 71., and the opposite end of the pintle is screw threaded and is engaged by a retaining nut h2.

From the foregoing description the operation of our improved hinge will be readily understood by those familiar with the art. Heretofore it has been customary to make hinges of this general character, but the spring holding barrel has either been made of separate tubing er, when formed integral with one of the leaves, has merely been of semi-circular outline. By forming the spring barrel integral with one of the hinge leaves and as a complete tube, much greater strength is given to the barrel while the construction is correspondingly simplified. Moreover, by providing the inner edge of the spring barrel with one or more lugs that connected together, one of said leaves'having interlock with the hinge leaf, the strength of the barrel is very materially increased.

Having thus described our invention, what we claim as new and desire to secure by Letters Patent, is:-

l. A spring hinge of the character described, comprising hinge leaves pivotally connected together, one of said leaves having a portion of the metal, whereof it is formed, coiled back upon itself to form a complete tubular spring barrel, the inner edge of the metal being introverted and terminating at a point opposite the point of union of the barrel with the body of the leaf.

2. A spring hinge of the character described comprising hinge leaves pivotally connected together, one of said leaves having a portion of a metal whereof itis formed coiled to form a complete tubular spring barrel, and means for interlocking the inner edge of the metal forming said barrel with the body of the hinge-leaf at a point opposite the barrel.

3. A spring hinge of the character described comprising hinge leaves pivotally a portion of the metal wheieof it is formed coiled to form a complete tubular spring barrel, the inner edge of the metal forming said barrel being provided with a lug passingft-hrough a hole in the body of the hinge lea 4. A spring hinge of the character described comprising hinge leaves pivotally connected together, one of said leaves having a portion of the metal whereof it is formed coiled to form a complete tubular spring barrel, means for securing the inner edge of the metal forming the barrel to the body of the hinge leaf, plugs in the ends of said barrel provided with voffsets to engage the edge of the metal that forms the barrel, a coiled spring within said barrel and a pintle passing through said coiled spring and serving to pivotailly connect together the hinge leaves.

VILLIAM JAMES KEENE. GEO. XV. SCHUSTER. Vitnesses HARRY R. LUTHER, EDWARD KEENE. 

